topics tonight, including north korea's latest nuclear tests. and 34,000 u.s. troops in afghanistan, he'll bring home by this time next year. he'll also be talking about new gun laws. several gun violence victims will be guests at the state of the union. a teacher that survives the sandy hook shooting will be in the first lady's box. former congresswoman gabrielle giffords and her husband are joining the arizona delegation. on capitol hill, tara mergener, wjz eyewitness news. >> and we don't want you to miss wjz and cbs's news coverage of the state of the union address and the republican response, beginning tonight at 9:00 p.m., right here. >>> and still to come tonight on wjz's eyewitness news. changes in the catholic church. the latest fallout from the pope's sudden resignation. and rumors about his health. >>> when wjz returns, i'll explain how a new statewide proposal could increase safety at schools and save lives. >>> he went to the super bowl, but came back with someone else's memories. i'm mary bubala. how facebook reunited ravens fans.